V-Value | Fibercore
When the V-Value is greater than 2.405 the fiber will propagate multiple modes. On the contrary, if the V-Value is less than 2.405 then the light propagated through the fiber will be single-mode.
What does the V in optical fiber represent
Home / What does the V in optical fiber represent
V number is a dimensionless quantity characterizing the mode structure of an optical fiber. It will tell how the light will travel in the fiber, the number of modes the fiber will support either single or multi mode. In an optical fiber, the normalized frequency, V (also called the V number), is given by where a is the core radius, λ is the wavelength in vacuum, n1 is the maximum refractive index of the core, n2 is the refractive index of the homogeneous cladding, and applying the usual definition of the.
